With all the hoopla about increased fuel efficiency and decreased CO2 emissions, it would be great to know which cars offer the best MPGs and the lowest CO2 emissions.

Auto Express revealed their list of the Top 100 Most Fuel-Efficient Cars. The list features cars rated in ten different categories - executive, family, SUVs, MPVs, sports, compact, superminis, city cars, cabriolets, and hatchbacks.

Here’s the list of the top 10 most fuel-efficient family cars.

10. Fiat Croma 1.9 JTD
MPG: 37.3
CO2: 160

9. Kia Magentis 2.0 CRDi
MPG: 38.8
CO2: 162

8. Ford Mondeo 2.0 TDCi
MPG: 39.5
CO2: 156

7. Vauxhall Signum 1.9 CDTI 150
MPG: 39.6
CO2: 162

6. SEAT Toledo 1.9 TDI 100
MPG: 40.2
CO2: 146

5. Vauxhall Vectra 1.9 CDTI
MPG: 40.4
CO2: 157

4. Toyota Avensis 2.2 D-4D
MPG: 41.9
CO2: 161

3. Volkswagen Passat 2.0 TDI 140
MPG: 43.5
CO2: 173

2. Skoda Octavia 2.0 TDI 140
MPG: 46.1
CO2: 149

1. Honda Accord 2.2 i-CTDi
MPG: 46.4
CO2: 145

Source: Auto Express